Automatic drilling-machine.



L. REICHERT. AUTOMATIC DRILLING MACHINE.

APPLICATION rum) MAR. 16. 190a.

Patented June 29,1909.

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- Wat" zoom L. REIGHBRT.

AUTOMATIC DRILLING MACHINE.

APILIOATION FILED MARJG, 1908.

926,606. Patented June 29, 1909. I 2 SHEETS-SHEET 2.

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LOUIS REIOHERT, OF SCRANTON, PENNSYLVANIA.

AUTOMATIC DRILLING-"WACHINE.

Application filed March 16, 1908.

To all whom it may concern:

Be it known that 1, Louis REIUHER'J, a citizen of the United States, residing at Scranton, in the county of Laclntwanna and State of Pennsylvania, have invented certain new and useful Improvements in Automatic Drilling-Machines; and I do hereby declare the following to be a full, clear, and exact dcscription of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to improvements in drilling machines, and particularly to machines for drilling fine work as small pinions, stalls, etc. used in watches, clocks, and the like, and has for an object the provision of a drill that will quickly and accurately drill a hole any place desired.

Another object in view is the provision of a drilling machine arranged to receive the end of a stall or shalt used in mounting wheels in a clock or watch, and boring a hole longitudinally in said shaft preparatory to securing a bearing member therein.

A still further object in view is the provision of a drilling machine that is adapted to receive an article to be drilled and then be set for drilling a hole a proper distance and then put into operation and left to automatically linish the drilling operation.

A further object in view is the provision. of a spring driven machine for rotating a drill at a comparatively high speed for drilling a hole in any article desired, the machine being formed with a guiding or dividing plate for holding the article in position that is designed to be drilled, and mechanism for yieldingly forcing the drill against thev article being drilled.

With these and other objects in view the invention comprises certain novel constructions, combinations, and arrangement of parts as will be hereinafter more fully described and claimed.

In the accompanying drawing: Figure 1 is a side elevation of a drilling machine formed according to the present invention. Fig. 2 is an end view of Fig. 1. Fig. 3 is a section through Fig. 1 approximately on line 3- 3, certain parts being broken away. Fig. l is a fragmentary top plan view of Fig. 1. F 5 is an enlarged detail view of a guide or dividing plate and means for holding the same in position.

In constructing a drilling machine according to the present invention the same is made Specification of Letters Patent.

Patented June 29, 1909.

Serial No. 421,752.

with a "frame having an upper plate or member 1, and also a plate or member 2, together with a plurality of uprights 3 arranged to hold the plates spaced apart and yet lirmly in position. Mounted between plates 1 and 2 is a spring motor -l arranged to convey power through gears 5 and c and pinions 7 and S to a drill carrying shalt or spindle {1. The gear (3 in addition to meshing with pinion 8 also meshes with a pinion 10 which has connected therewith a gear 11 that meshes with a pinion. 12. Pinion 12 is rigidly mounted upon a shaft 1;) which in turn has rigidly secured thereto a fan or brake 1 1 used to limitor prevent a too high speed upon shalt or spindle 9. By this construction it will be seen. that power is connected with shaft or spindle E) and with brake 14 so that when one moves, the other will also move, and when brake 1s. in revolving is retarded by the air, spindle S) will also be retarded and limited in its speed. This will prevent the spindle from rotatin a drill 15 carried thereby from going too last and thereby becoming heated.

The spindle or shaft 9 has pinion 8 rigidly secured thereto so that when pinion S is rotated as heretofore described the spindle. will also be rotated. in order to form a proper bearing and also a comparatively long bearing for spindle l), tubular extensions 16 and 17 are provided that accommodate the end of the spindle. Spindle 9 at one end projects above plate 1 and is formed or provided with a bearing point 18 that is preferably formed of hard material. The. opposite end to point 18 is designed to be positioned in bearing 17 and to boformed hollow from the end up to a cut-away portion 19 for accommodating drill l5.

Positioned on plate 2 is a guide or dividing plate 20 arranged to receive a shaft or stall 21 of a wheel 22 and designed to hold the same in position for drill 15 to drill hole longitudinally of the shaft. The guide 20 is arranged with a plurality of apertures 23 of various sizes for accommodating various sized shafts 21. l ormed on the periphery of the guiding plate 20 is a plurality of teeth or projectimis 2 1 designed to accommodate a catch 25 that is designed to engage the projections 2d and by its spring action be held in contact thermvith. it will, however, be obvious that the catch 25 may be pivotally mounted and a spring used for holding the same in contact with projections 24. An adjusting member 26 is provided that has a loll flat side that engages member 25 when it desired to have the same engage projections 24 and when it is desired to disen age catch 25 member 26 is partially rotated and by such rotation will move catch 25 to the dotted position shown in Fig. 5.

A receiving member or chuck 27 is provided for receiving one end of shaft 21 while the shaft is being drilled, and in order to prevent the shaft from rotating a dog 23 is used, as clearly seen in Fig. 3. l ieeeiving member or chuck 27 is arranged to be slidably mounted into sleeve that in turn rigidly secured to a support 30. The receiving member 27 may move toward or from plate 2 and guiding plate 20 for receiving various sized articles and when the article has been proper y placed in position a set screw 31 is tightened for holding chuck or receiving member 27 in its adjusted position.

Bearing against the point 18 is a yielding tension member 32 that is slidably mounted in a sleeve 33 and is designed to be pressed by spring 34. Spring 34 is designed to be compressed or brought under tension by a sliding bar or shaft 35 as clearl seen in 2 and when brou ht under tension bar 35 is locked by having a lug projecting therefrom engage a rack 37 formed upon sleeve 33. Sleeve 33 is rigidly secured to a support 37 that is pivotally held in position by a securing member 38 and a tensioning or locking member 39. The support 37 is formed with a slot 40 that is struck upon the arc of a circle with member 38 as a center so that when. it is desired to remove shaft or spindle 9 together with drill 15 all that will be necessary will be to loosen tire tension nember 39 and swing support upon its pivot until sleeve 33 ms moved from above the spindle 9. The spindle then may be moved longitudinally and again replaced as may be desired. Support 37 is also formed wth an extension 41 that is designed to engage a swinging bar or extension of the spring motor for limiting the swinging movement thereof. By the construction of sleeve 33 spring 34 and surrounding parts a yielding tension may be brought upon spindle 9 for yieldingly pressing drill 15 in its work.

In operation when it is desired to drill an article as, for instance, a shaft as 21 the same is placed in position as seen in Figs. 1 aid 2 and drill 15 and spindle 9 placed in position if not already in position. Sliding shaft or member 35 is then pressed downward until spring 34 has been brought under tension to any desired degree for drilling any desired distance into shaft 21. A locking member 43 is then brought over so as to prevent the rotation of brake 14 by means of the operation of a lever 44. When brake 14 is thus locked against movement the spring motor 4 is wound up to any desired tension and after such winding lever 44 is moved for causing locl'ing member 43 to be disengaged from brake 14. This w l permit brake to move and consequently spindle 9 and the other moving parts coni'ieeted therewith. As will be evident t he will rotate drill l5 and as the some is pressed by spring 34 hole will be bored through shaft 2 As this takes some little time the machine usually is set aside out of the way and will continue to drill automatically the hole in the shaft and when the hole has attained a predetermined depth as regulated by the tension of spring 34 the drill 15 will cease to remove any matter from the shaft 2].. if the motor 4 has not run down by this time the same will continue to run until the spring is unwound, but will not continue to drill or remove matter from the shaft 21. From. this it will be evident that tiie machine when once set will drill a hole a predetermined distance and then stop drillin the operation being automatic after the drill has once been set into motion. In order to accommodate the mat ter drilled or removed countersunk or hollowedou-u portion 45 is provided in member This counter-sunk portion may be cleaned out from time to time as ma j be desired, either by removing through an opening left by guide or dividing plate 20, or dividing plate 20 may be entirely removed and the countersunk portion cleaned. The dividing plate or guide 20 does not entirely cover counter-sunk portion 45 and ordinarily the opening left will be sufliciently large for removing the borings of the drill.

What I claim is:

l. in a drilling machine, a spindle, a workrest provided with a plurality of openings for receiving and guiding an article, said rest also being provided with a plurality of teeth, a spring pawl engageable with the teeth interchangeably, and a rotatable member constructed and arranged to permit of such engagement of the pawl with the teeth when in one position, and to hold the pawl out of such engagement when turned to another position.

In a d illing machine, a spindle, a workrest in the nature of a wheel provided with a plurality of openings for receiving an article, the said wheel being formed upon it periphery with a plurality of teeth, a spring pawl engageable with the teeth interchangeably, and a rotatable member constructed and arranged when in one position to permit of engagement or the pawl with the teeth, and when rotated to another position to prevent such engagement.

3. A drilling machine comprising a frame, a spindle, a guide for the spindle, a seat for one end of the spindle, a spring bearing against the seat, and means for acjusting the tension of the spring.

4. A drilling machine comprising a frame, a spindle, a guide for the spindle, a sleeve, a

seat for one end of the spindle, said seat being received in the sleeve and movable longitudinally thereof, a spring arranged within the sleeve and bearing against the seat, and means adjustably held within the sleeve l'or varying the tension of the spring.

5. A drilling machine comprising a frame, a spindle, a guide for the spindle, a sleeve, a seat for one end of the spindle, the said seat being movable in the sleeve, a spring arranged within the sleeve and bearing against the seat, and means whereby the tension of the spring may be varied.

6. A drilling machine comprising a frame, 15 a spindle, a guide for the spindle, a sleeve, a

seat for one end of the spindle arranged for movement in the sleeve, a spring arranged within the sleeve and bearing against the seat, a rod slidably received in the sleeve, the said sleeve being formed with a slot and along one edge of the slot with rack teeth, and a rejection on the rod engageable with the Sitlt rack teeth.

In testimony whereof I aHiX my signature in presence of two witnesses.

J. M. SHEFFIELD, W. V. BAYLOR. 

